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Fix truncating of files with <>;file combined with <#pattern

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The issue with truncating files was caused by out-of-sync streams.
Details and discussion: https://github.com/att/ast/issues/61

src/cmd/ksh93/sh/io.c: sh_iorestore():
- To be safe, sync all streams before restoring file descriptors.

src/cmd/ksh93/tests/io.sh:
- Add two regression tests for truncating files with this
  combination of redirections.
- The second test, which invokes a -c script, is disabled for now
  as this triggers another corner case bug involving the SH_NOFORK
  optimisaton for -c scripts. That fix is for another commit.

(cherry picked from commit 18fb64840365c2ff4608188e5487bd79d08f67d1)
This commit is contained in:
Martijn Dekker 2020-05-20 23:42:00 +02:00
parent a638e724d0
commit e999f6b169
4 changed files with 32 additions and 1 deletions
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2
src/cmd/ksh93/include/version.h
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@ -17,4 +17,4 @@
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#define SH_RELEASE "93u+m 2020-05-20"
#define SH_RELEASE "93u+m 2020-05-21"